How to convert images to binary in php

php method to convert images into binary: first obtain the size of the specified image file through the filesize function; then use the fread and fopen functions to read the file; finally execute the corresponding file to output the image in the form of a binary stream to the client.

php converts image files into binary output

Method:

header( "Content-type: image/jpeg");
$PSize = filesize('1.jpg');
$picturedata = fread(fopen('1.jpg', "r"), $PSize);
echo $picturedata;

It’s that simple With 4 lines of code, the image is output to the client in the form of a binary stream, which is no different from opening a picture.

It should be noted here that the header sent depends on the specific situation and may not always be image/jpeg. JPG is image/jpeg, but PNG is image/png. Different types of pictures output different headers.

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